Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual é a média de Abr 2013 com um Jun 2011 menor que 14?
 ###Tabelas: CREATE TABLE format_and_schedule (format_and_schedule_id AUTO_INCREMENT PRIMARY KEY, Round VARCHAR, Date(s) VARCHAR, Clubs from the previous round VARCHAR, Clubs involved INT, Fixtures INT) CREATE TABLE belting_and_debelting_statistics (belting_and_debelting_statistics_id AUTO_INCREMENT PRIMARY KEY, Feb 2010 VARCHAR, Mar 2010 VARCHAR, May 2010 INT, Jun 2010 INT, Jul 2010 INT, Aug 2010 INT, Sep 2010 INT, Oct 2010 INT, Nov 2010 INT, Dec 2010 INT, Jan 2011 INT, Feb 2011 INT, Mar 2011 INT, Apr 2011 INT, May 2011 INT, Jun 2011 INT, Jul 2011 INT, Aug 2011 INT, Sep 2011 INT, Oct 2011 INT, Nov 2011 INT, Dec 2011 INT, Jan 2012 INT, Feb 2012 INT, Mar 2012 INT, Apr 2012 INT, May 2012 INT, Jun 2012 INT, Jul 2012 INT, Aug 2012 INT, Sep 2012 INT, Oct 2012 INT, Nov 2012 INT, Dec 2012 INT, Jan 2013 INT, Feb 2013 INT, Mar 2013 INT, Apr 2013 INT, May 2013 INT, Jun 2013 INT, Jul 2013 INT, Aug 2013 INT, Sep 2013 INT, Oct 2013 INT) CREATE TABLE formats (formats_id AUTO_INCREMENT PRIMARY KEY, Release format VARCHAR, Country VARCHAR, Label(s) VARCHAR, Cat. no. VARCHAR, Release date VARCHAR) CREATE TABLE third_round_proper (third_round_proper_id AUTO_INCREMENT PRIMARY KEY, Tie no VARCHAR, Home team VARCHAR, Score VARCHAR, Away team VARCHAR, Date VARCHAR) CREATE TABLE record_progression (record_progression_id AUTO_INCREMENT PRIMARY KEY, Record VARCHAR, Athlete VARCHAR, Nation VARCHAR, Venue VARCHAR, Date VARCHAR)  
SELECT AVG Apr 2013 FROM belting_and_debelting_statistics WHERE Jun 2011 < 14